閱聞錄

物件：卡牌。若是要繼續延伸為大老二遊戲的話，enum可以用來比較花色。

    class Card
    {
        private int _point;
        private int _color;
        public int Point { get => _point; set => _point = value; }
        public int Color { get => _color; set => _color = value; }
        public enum EColor
        {
            Spades = 0,
            Heart = 1,
            Diamond = 2,
            Plum = 3
        }
    }

卡組：建構子。i決定點數，j決定花色，這樣一建立起來的卡組會排序好的卡組。

        public CardGroup()
        {
            for (int i = 0; i < 13; i++)
            {
                for (int j = 0; j < 4; j++)
                {
                    Card Card = new Card();
                    Card.Color = j;
                    Card.Point = i + 1;
                    Group.Add(Card);
                }
            }
        }

卡組：隨機抽一張牌。52張牌中隨機抽一張牌回傳，並刪除在卡組中的這張牌。

        public Card GetRandowmCard()
        {
            Random random = new Random(Guid.NewGuid().GetHashCode());
            int Cardindex = random.Next(Group.Count);
            Card Card = new Card
            {
                Point = Group[Cardindex].Point,
                Color = Group[Cardindex].Color
            };
            Group.RemoveAt(Cardindex);
            return Card;
        }

卡牌：洗牌，實際上是使用上一個抽牌的方法，抽52次到新的卡組，由新的卡組給予卡組。

        public void Shuffle()
        {
            List<Card> NewGroup = new List<Card>();
            CardGroup CardGroup = new CardGroup();
            foreach (Card Card in Group)
            {
                NewGroup.Add(CardGroup.GetRandowmCard());
            }
            Group = NewGroup;
        }

下列是完整程式碼

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp1
{
    class CardGroup
    {
        public List<Card> Group = new List<Card>();
        public CardGroup()
        {
            for (int i = 0; i < 13; i++)
            {
                for (int j = 0; j < 4; j++)
                {
                    Card Card = new Card();
                    Card.Color = j;
                    Card.Point = i + 1;
                    Group.Add(Card);
                }
            }
        }
        public Card GetRandowmCard()
        {
            Random random = new Random(Guid.NewGuid().GetHashCode());
            int Cardindex = random.Next(Group.Count);
            Card Card = new Card
            {
                Point = Group[Cardindex].Point,
                Color = Group[Cardindex].Color
            };
            Group.RemoveAt(Cardindex);
            return Card;
        }
        public void ReadGroup()
        {
            foreach (Card Card in Group)
            {
                Console.WriteLine("Point = " + Card.Point.ToString().PadLeft(2, ' ') + " Color = " + (Card.EColor)Card.Color);
            }
        }
        public void Shuffle()
        {
            List<Card> NewGroup = new List<Card>();
            CardGroup CardGroup = new CardGroup();
            foreach (Card Card in Group)
            {
                NewGroup.Add(CardGroup.GetRandowmCard());
            }
            Group = NewGroup;
        }
    }
    class Card
    {
        private int _point;
        private int _color;
        public int Point { get => _point; set => _point = value; }
        public int Color { get => _color; set => _color = value; }
        public enum EColor
        {
            Spades = 0,
            Heart = 1,
            Diamond = 2,
            Plum = 3
        }
    }
    class Program
    {
        static void Main(string[] args)
        {
            CardGroup CardGroup = new CardGroup();
            CardGroup.Shuffle();
            CardGroup.ReadGroup();
            Console.ReadKey();
        }

    }
}

這程式其實已經可以做到發牌了，我覺得真正的困難點是遊戲的規則，例如大老二要怎麼判斷出牌的類別，而且若是要多人連線會使用到TCP/IP，期望我之後能完成。